BottomNavigationView getmaxitemcount

Question

Hello member stackoverflow porblem with bottomnavihationview

in my app I used BottomNavigationView with 4 item . it make my app easy and beauty

  BottomNavigationView bottomNavigationView = (BottomNavigationView) findViewById(R.id.bottom_navigation_view);
        bottomNavigationView.inflateMenu(R.menu.menu_bottom_navigation);
        bottomNavigationView.setOnNavigationItemSelectedListener(new BottomNavigationView.OnNavigationItemSelectedListener() {
            @Override
            public boolean onNavigationItemSelected(@NonNull MenuItem item) {
                int id = item.getItemId();
                switch (id){
                    case R.id.action_one:

                        break;
                    case R.id.action_two:
                        FragmentTransaction manger= getSupportFragmentManager().beginTransaction();
                        pop_web_view  pop3 =new pop_web_view();
                        pop3.show(manger,null);

                        break;
                    case R.id.action_three:

                        break;
                    case R.id.action_four:

                        break;
                }

                return false;
            }
        });

in activity_main :

<android.support.design.widget.BottomNavigationView
        android:id="@+id/bottom_navigation_view"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_anchorGravity="bottom"
        android:paddingTop="560dp"
        app:itemBackground="@color/colorDivider"
        app:itemIconTint="@color/colorPrimaryDark"
        app:itemTextColor="@color/colorPrimaryDark"
        app:menu="@menu/menu_bottom_navigation" />

in menu xml :

<?xml version="1.0" encoding="utf-8"?>
<menu
    xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:id="@+id/action_one"
        android:icon="@android:drawable/ic_secure"
        android:title="One"/>
    <item
        android:id="@+id/action_two"
        android:icon="@android:drawable/ic_dialog_info"
        android:title="Two"/>
    <item
        android:id="@+id/action_three"
        android:icon="@android:drawable/ic_dialog_email"
        android:title="Three"/>
    <item
        android:id="@+id/action_four"
        android:icon="@android:drawable/ic_popup_reminder"
        android:title="Four"/>
</menu>

BUT I have problem Caused by:

java.lang.IllegalArgumentException: Maximum number of items supported by BottomNavigationView is 5. Limit can be checked with BottomNavigationView#getMaxItemCount()

https://medium.com/@chornenkyy.v/first-look-at-bottomnavigationview-from-android-design-library-8244de85b953#.jae121tmp — Aditya Vyas-Lakhan, Feb 10 '17 at 04:04

score 20 · Accepted Answer · edited May 23 '17 at 11:53

20

The error said that maximum number of items supported by BottomNavigationView is 5.

And try to delete

bottomNavigationView.inflateMenu(R.menu.menu_bottom_navigation);

because you are already inflating it in app:menu="@menu/menu_bottom_navigation"

And you are modifying it by calling

bottomNavigationView.inflateMenu(R.menu.menu_bottom_navigation);

The documentation says Existing items in the menu will not be modified or removed.

Check this documention

And check this answer

Implementation of BottomNavigationView has condition: when there is more than 3 items then use shift mode.

edited May 23 '17 at 11:53

Community

1
1

answered Feb 10 '17 at 03:43

Kiran Benny Joseph

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i have 4 item just – Ayham Showa Feb 10 '17 at 03:45
@AyhamShowa the code you are posted here is of menu_bottom_navigation.xml? – Kiran Benny Joseph Feb 10 '17 at 03:46
this is a cod for menu_bottom_navigation.xml – Ayham Showa Feb 10 '17 at 03:53
@AyhamShowa then try deleting `bottomNavigationView.inflateMenu(R.menu.menu_bottom_navigation);` from your code. – Kiran Benny Joseph Feb 10 '17 at 03:59
@AyhamShowa Which animation are you talking about? – Kiran Benny Joseph Feb 10 '17 at 04:18
when i press item it move to left But know it stop – Ayham Showa Feb 10 '17 at 04:27
@AyhamShowa check that answer which I added to my answer – Kiran Benny Joseph Feb 10 '17 at 04:45
but this for disableShiftMode !! – Ayham Showa Feb 10 '17 at 04:52
@AyhamShowa try to add these in your code `item.setShiftingMode(true);` and `item.setChecked(item.getItemData().isChecked());` – Kiran Benny Joseph Feb 10 '17 at 04:59
where i add this ?? – Ayham Showa Feb 10 '17 at 05:02
@AyhamShowa after the switch statement `switch (id){` – Kiran Benny Joseph Feb 10 '17 at 05:04
@AyhamShowa then remove `item.setChecked(item.getItemData().isChecked());` and try with `item.setShiftingMode(true);` – Kiran Benny Joseph Feb 10 '17 at 05:15
where i can add photo ? – Ayham Showa Feb 10 '17 at 05:44
@AyhamShowa can you caopy that `BottomNavigationViewHelper` from that [answer](http://stackoverflow.com/a/40189977/5962715) and replace `item.setShiftingMode(false);` to `item.setShiftingMode(true);` and apply to your code like `BottomNavigationViewHelper.disableShiftMode(bottomNavigationView);` beacause this item is bottomNavigationView item and that is `BottomNavigationMenuView` item – Kiran Benny Joseph Feb 10 '17 at 05:57

score 4 · Answer 2 · answered Feb 10 '17 at 04:22

I know you accepted the current answer, but it's incomplete. You added a menu in your XML to the BottomNavigationView, then you try to call inflateMenu(...), however, the documentation clearly says:

Existing items in the menu will not be modified or removed.

This means that you are adding menu items to this view, not replacing them.

What you can do to fix it is the following:

bottomNavigationView.getMenu().clear();
bottomNavigationView.inflateMenu(R.menu.menu_bottom_navigation);

Also it's worth mentioning that you do the same things twice: once in the XML (by adding app:menu="..." attribute to the layout item), once in the Java class by calling the inflateMenu(...) method. Delete either of them and it will work. Keep in mind though that if you want to change the menu items later dynamically, you'll need to clear the existing items the way I posted.

remove this : bottomNavigationView.inflateMenu(R.menu.menu_bottom_navigation); — Ayham Showa, Feb 10 '17 at 04:41
@AyhamShowa If you remove the XML attribute instead of this, does the animation work? — Gergely Kőrössy, Feb 10 '17 at 04:42

score 0 · Answer 3 · answered Jun 06 '18 at 07:46

In my app I used BottomNavigationView with 2 item, but there are 4 items like this:

My XML:

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/bottom_navigation_constraintlayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_marginBottom="0dp"
    android:layout_marginLeft="0dp"
    android:layout_marginRight="0dp"
    tools:context=".BottomNavigation">

    <android.support.design.widget.BottomNavigationView
        android:id="@+id/bottom_navigation"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom"
        android:background="@android:color/holo_red_dark"
        android:visibility="visible"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:menu="@menu/navigation" />

</android.support.constraint.ConstraintLayout>

and my code:

public class BottomNavigation extends AppCompatActivity {

    private static final String TAG = "BottomNavigation";

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        try {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_bottom_navigation);
            updateMenu();
        } catch (Exception e) {
            Log.e(TAG, "onCreate: ", e);;
        }
    }

    @UiThread
    private void updateMenu() {
        BottomNavigationView bottomNavigationView = findViewById(R.id.bottom_navigation);
        if (bottomNavigationView != null) {
            bottomNavigationView.inflateMenu(R.menu.navigation);

            for (Integer i = 0;
                 i < bottomNavigationView.getMenu().size();
                 ++i   ) {
                Log.i(TAG, "updateMenu: " + bottomNavigationView.getMenu().getItem(i).getItemId());
            }
        }
    }
}

Delete either of them and it will work. thanks.

BottomNavigationView getmaxitemcount

3 Answers3